Round|Natural|GIA

1.50ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6505156143

Certificate GIA 6505156143

Diamond specifications and retailer prices

From €7,984 EUR
$8,920 USD
As of October 25, 2026
Save €8,462 EUR (51%) vs most expensive(unlock to see where)
33 retailers carry this diamond
Most expensive: €16,446 EUR at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6505156143. Listed at 33 retailers as of October 25, 2026, with prices from €7,984 to €16,446, a €8,462 spread on the same certified stone. Diamond Quarter lists it at €16,446. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6505156143
Dimensions7.42 × 7.38 × 4.43 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
7.42 mm7.38 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6505156143
Side View
Table 60.0%Crown 32°Girdle: MED-STKPavilion 41°Culet: NoneDepth 60.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: €14,250 EUR|Low: €7,266 EUR|High: €15,208 EUR|Avg: €10,355 EUR|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 1, 2026
Retailer 16€7,984 EUR
Retailer 4€8,180 EUR
Retailer 15€8,720 EUR
Retailer 7€8,998 EUR
Retailer 2€9,125 EUR
Retailer 8€9,125 EUR
Retailer 9€9,752 EUR
Retailer 12€9,786 EUR
Retailer 17€10,038 EUR
Retailer 14€10,050 EUR
Retailer 5€10,173 EUR
Retailer 10€10,499 EUR
Retailer 11€11,292 EUR
Retailer 6€11,406 EUR
Retailer 13€13,405 EUR
Retailer 1€14,250 EUR
Retailer 3€15,208 EUR

32 data points across 17 retailers

33 retailers€7,984 EUR to €16,446 EUR

A
Cheapest Retailer
-
€7,984 EUR
$8,920 USD
B+
Retailer 2
-
€8,180 EUR
$9,139 USD
View
B+
Retailer 3
-
€8,306 EUR
$9,280 USD
View
B+
Retailer 4
-
€8,467 EUR
$9,459 USD
View
B+
Retailer 5
-
€8,698 EUR
$9,717 USD
View
B+
Retailer 6
-
€8,720 EUR
$9,742 USD
View
B+
Retailer 7
-
€8,998 EUR
CA$13,962 CAD
View
B+
Retailer 8
-
€9,023 EUR
$10,080 USD
View
B+
Retailer 9
-
€9,125 EUR
$10,194 USD
View
Final sale: no returns
B+
Retailer 10
-
€9,125 EUR
$10,194 USD
View
B+
Retailer 11
-
€9,733 EUR
$10,874 USD
View
B+
Retailer 12
-
€9,752 EUR
$10,895 USD
View
B+
Retailer 13
-
€9,786 EUR
£8,609 GBP
View
B+
Retailer 14
-
€9,885 EUR
$11,044 USD
View
B+
Retailer 15
-
€10,038 EUR
$11,214 USD
View
Retailer 16
-
€10,050 EUR
A$17,274 AUD
View
Price last confirmed 8 days ago
B+
Retailer 17
-
€10,129 EUR
$11,316 USD
View
B+
Retailer 18
-
€10,129 EUR
$11,316 USD
View
B+
Retailer 19
-
€10,173 EUR
$11,365 USD
View
Retailer 20
-
€10,196 EUR
$11,391 USD
View
Price last confirmed 9 days ago
B+
Retailer 21
-
€10,499 EUR
£9,236 GBP
View
B
Retailer 22
-
€10,687 EUR
$11,940 USD
View
B
Retailer 23
-
€10,687 EUR
$11,940 USD
View
B
Retailer 24
-
€10,875 EUR
$12,150 USD
View
B
Retailer 25
-
€10,877 EUR
$12,152 USD
View
B
Retailer 26
-
€11,036 EUR
$12,330 USD
View
B
Retailer 27
-
€11,110 EUR
$12,412 USD
View
B
Retailer 28
-
€11,292 EUR
View
B
Retailer 29
-
€11,406 EUR
$12,743 USD
View
B
Retailer 30
-
€13,405 EUR
ZAR 241,949 ZAR
View
B
Retailer 31
-
€14,250 EUR
£12,536 GBP
View
B
Retailer 32
-
€15,208 EUR
$16,991 USD
View
Most Expensive
B
Diamond Quarter
1.5SI1D65439546KG · Oct 31
€16,446 EUR
£14,467 GBP
View
32 more retailers have this diamond
Prices start from €7,984 EURSave up to €8,462 EUR

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.50ct Round
€7,984 EUR