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Cushion|Natural|GIA

1.51ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 6551130924

Certificate GIA 6551130924

Diamond specifications and retailer prices

From €2,010 EUR
As of November 5, 2026
Save €1,650 EUR (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €3,660 EUR at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551130924. Listed at 12 retailers as of November 5, 2026, with prices from €2,010 to €3,660, a €1,650 spread on the same certified stone. Helzberg Diamonds lists it at €3,660. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551130924
Dimensions6.85 × 6.09 × 4.22 mm
L/W Ratio1.12
Top View
6.85 mm6.09 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551130924
Side View
Table 61.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: €3,660 EUR|Low: €1,998 EUR|High: €3,886 EUR|Avg: €2,664 EUR|-5.8%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 8€2,010 EUR
Retailer 2€2,091 EUR
Retailer 9€2,127 EUR
Retailer 5€2,245 EUR
Retailer 7€2,276 EUR
Retailer 3€2,315 EUR
Retailer 4€2,425 EUR
Retailer 12€2,505 EUR
Retailer 13€2,621 EUR
Retailer 6€3,000 EUR
Retailer 10€3,242 EUR
Retailer 11€3,621 EUR
Helzberg Diamonds€3,660 EUR

32 data points across 13 retailers

12 retailers€2,010 EUR to €3,660 EUR

A
Cheapest Retailer
-
€2,010 EUR
A
Retailer 2
-
€2,091 EUR
View
A
Retailer 3
-
€2,127 EUR
View
A
Retailer 4
-
€2,276 EUR
View
A
Retailer 5
-
€2,315 EUR
View
A
Retailer 6
-
€2,425 EUR
View
A
Retailer 7
-
€2,505 EUR
View
A
Retailer 8
-
€2,621 EUR
View
A
Retailer 9
-
€3,000 EUR
View
B+
Retailer 10
-
€3,242 EUR
View
B+
Retailer 11
-
€3,621 EUR
View
Most Expensive
B+
Helzberg Diamonds
XZRMLLHHJGPIK · Nov 6
€3,660 EUR
$4,086 USD
View
11 more retailers have this diamond
Prices start from €2,010 EURSave up to €1,650 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
1.51ct Cushion
€2,010 EUR