CaratHunter
Plans
Cushion|Natural|GIA

1.51ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 6551130924

Certificate GIA 6551130924

Diamond specifications and retailer prices

From $2,876 SGD
As of November 5, 2026
Save $2,361 SGD (45%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,237 SGD 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 $2,876 to $5,237, a $2,361 spread on the same certified stone. Helzberg Diamonds lists it at $5,237. 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

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: Nov 5
Current: $5,237 SGD|Low: $2,859 SGD|High: $5,561 SGD|Avg: $3,812 SGD|-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$2,876 SGD
Retailer 2$2,993 SGD
Retailer 9$3,044 SGD
Retailer 5$3,212 SGD
Retailer 7$3,257 SGD
Retailer 3$3,313 SGD
Retailer 4$3,469 SGD
Retailer 12$3,585 SGD
Retailer 13$3,750 SGD
Retailer 6$4,293 SGD
Retailer 10$4,639 SGD
Retailer 11$5,182 SGD
Helzberg Diamonds$5,237 SGD

32 data points across 13 retailers

12 retailers$2,876 SGD to $5,237 SGD

A
Cheapest Retailer
-
$2,876 SGD
A
Retailer 2
-
$2,993 SGD
View
A
Retailer 3
-
$3,044 SGD
View
A
Retailer 4
-
$3,257 SGD
View
A
Retailer 5
-
$3,313 SGD
View
A
Retailer 6
-
$3,469 SGD
View
A
Retailer 7
-
$3,585 SGD
View
A
Retailer 8
-
$3,750 SGD
View
A
Retailer 9
-
$4,293 SGD
View
B+
Retailer 10
-
$4,639 SGD
View
B+
Retailer 11
-
$5,182 SGD
View
Most Expensive
B+
Helzberg Diamonds
XZRMLLHHJGPIK · Nov 6
$5,237 SGD
$4,086 USD
View
11 more retailers have this diamond
Prices start from $2,876 SGDSave up to $2,361 SGD

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
$2,876 SGD