CaratHunter
Plans
Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1155978214

Certificate GIA 1155978214

Diamond specifications and retailer prices

From €9,895 EUR
$11,055 USD
As of October 25, 2026
Save €9,161 EUR (48%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €19,056 EUR at Diamond Quarter · As of October 31, 2026
View at Diamond Quarter

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1155978214. Listed at 18 retailers as of October 25, 2026, with prices from €9,895 to €19,056, a €9,161 spread on the same certified stone. Diamond Quarter lists it at €19,056. 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

1.51
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1155978214
Dimensions7.38 × 7.36 × 4.47 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.38 mm7.36 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1155978214
Side View
Table 60.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 60.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: €13,514 EUR|Low: €9,363 EUR|High: €17,757 EUR|Avg: €13,141 EUR|+3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 6€9,895 EUR
Retailer 7€10,767 EUR
Retailer 2€11,902 EUR
Retailer 8€11,983 EUR
Retailer 5€12,059 EUR
Retailer 1€13,514 EUR
Retailer 3€16,505 EUR
Retailer 4€17,640 EUR

44 data points across 8 retailers

18 retailers€9,895 EUR to €19,056 EUR

B+
Cheapest Retailer
-
€9,895 EUR
$11,055 USD
B+
Retailer 2
-
€10,257 EUR
$11,459 USD
View
B+
Retailer 3
-
€10,424 EUR
$11,646 USD
View
B+
Retailer 4
-
€10,497 EUR
CA$16,288 CAD
View
B
Retailer 5
-
€10,767 EUR
$12,029 USD
View
Final sale: no returns
B
Retailer 6
-
€11,054 EUR
$12,350 USD
View
B
Retailer 7
-
€11,235 EUR
$12,552 USD
View
B
Retailer 8
-
€11,902 EUR
£10,470 GBP
View
B
Retailer 9
-
€11,983 EUR
$13,388 USD
View
Retailer 10
-
€12,059 EUR
A$20,727 AUD
View
Price last confirmed 8 days ago
B
Retailer 11
-
€12,171 EUR
$13,597 USD
View
B
Retailer 12
-
€12,639 EUR
$14,120 USD
View
B
Retailer 13
-
€13,017 EUR
$14,543 USD
View
B
Retailer 14
-
€13,514 EUR
View
B
Retailer 15
-
€16,505 EUR
ZAR 297,899 ZAR
View
B
Retailer 16
-
€17,640 EUR
£15,518 GBP
View
B
Retailer 17
-
€18,724 EUR
$20,919 USD
View
Most Expensive
B
Diamond Quarter
1.51SI1E1114893CN · Oct 31
€19,056 EUR
£16,763 GBP
View
17 more retailers have this diamond
Prices start from €9,895 EURSave up to €9,161 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.

B+
1.51ct Round
€9,895 EUR