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Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1155978214

Certificate GIA 1155978214

Diamond specifications and retailer prices

From €9,933 EUR
$11,055 USD
As of October 25, 2026
Save €9,195 EUR (48%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €19,128 EUR at Diamond Quarter · As of October 29, 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 €9,933 to €19,128, a €9,195 spread on the same certified stone. Diamond Quarter lists it at €19,128. 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
Colour
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: €13,661 EUR|Low: €9,398 EUR|High: €17,824 EUR|Avg: €13,329 EUR|+4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 6€9,933 EUR
Retailer 7€10,808 EUR
Retailer 2€11,947 EUR
Retailer 5€12,105 EUR
Retailer 1€13,661 EUR
Retailer 4€16,480 EUR
Retailer 3€17,707 EUR

43 data points across 7 retailers

18 retailers€9,933 EUR to €19,128 EUR

B+
Cheapest Retailer
-
€9,933 EUR
$11,055 USD
B+
Retailer 2
-
€10,296 EUR
$11,459 USD
View
B+
Retailer 3
-
€10,464 EUR
$11,646 USD
View
B+
Retailer 4
-
€10,536 EUR
CA$16,288 CAD
View
B
Retailer 5
-
€10,808 EUR
$12,029 USD
View
Final sale: no returns
B
Retailer 6
-
€11,096 EUR
$12,350 USD
View
B
Retailer 7
-
€11,278 EUR
$12,552 USD
View
B
Retailer 8
-
€11,947 EUR
£10,470 GBP
View
B
Retailer 9
-
€12,029 EUR
$13,388 USD
View
B
Retailer 10
-
€12,105 EUR
A$20,727 AUD
View
B
Retailer 11
-
€12,216 EUR
$13,597 USD
View
B
Retailer 12
-
€12,686 EUR
$14,120 USD
View
B
Retailer 13
-
€13,066 EUR
$14,543 USD
View
B
Retailer 14
-
€13,661 EUR
View
B
Retailer 15
-
€16,480 EUR
ZAR 296,315 ZAR
View
B
Retailer 16
-
€17,707 EUR
£15,518 GBP
View
B
Retailer 17
-
€18,795 EUR
$20,919 USD
View
Most Expensive
B
Diamond Quarter
1.51SI1E1114893CN · Oct 29
€19,128 EUR
£16,763 GBP
View
17 more retailers have this diamond
Prices start from €9,933 EURSave up to €9,195 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
€9,933 EUR