Cushion|Natural|GIA

1.51ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 6551130924

Certificate GIA 6551130924

Diamond specifications and retailer prices

From $2,244 USD
As of November 5, 2026
Save $1,842 USD (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,086 USD 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 $2,244 to $4,086, a $1,842 spread on the same certified stone. Helzberg Diamonds lists it at $4,086. 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
Color
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: $4,086 USD|Low: $2,231 USD|High: $4,339 USD|Avg: $2,974 USD|-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$2,244 USD
Retailer 2$2,335 USD
Retailer 9$2,375 USD
Retailer 5$2,506 USD
Retailer 7$2,541 USD
Retailer 3$2,585 USD
Retailer 4$2,707 USD
Retailer 12$2,797 USD
Retailer 13$2,926 USD
Retailer 6$3,350 USD
Retailer 10$3,620 USD
Retailer 11$4,043 USD
Helzberg Diamonds$4,086 USD

32 data points across 13 retailers

12 retailers$2,244 USD to $4,086 USD

A
Cheapest Retailer
-
$2,244 USD
A
Retailer 2
-
$2,335 USD
View
A
Retailer 3
-
$2,375 USD
View
A
Retailer 4
-
$2,541 USD
View
A
Retailer 5
-
$2,585 USD
View
A
Retailer 6
-
$2,707 USD
View
A
Retailer 7
-
$2,797 USD
View
A
Retailer 8
-
$2,926 USD
View
A
Retailer 9
-
$3,350 USD
View
B+
Retailer 10
-
$3,620 USD
View
B+
Retailer 11
-
$4,043 USD
View
Most Expensive
B+
Helzberg Diamonds
XZRMLLHHJGPIK · Nov 6
$4,086 USD
View
11 more retailers have this diamond
Prices start from $2,244 USDSave up to $1,842 USD

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
$2,244 USD