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Cushion|Natural|GIA

1.51ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6541862635

Certificate GIA 6541862635

Diamond specifications and retailer prices

From $6,029 NZD
HK$26,500 HKD
As of November 2, 2026
Save $6,661 NZD (52%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $13,060 NZD at Wholesale Diamonds Direct · As of October 23, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded I 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 6541862635. Listed at 21 retailers as of November 2, 2026, with a 110% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle36.9°
OriginNatural
Grading LabGIA
CertificateGIA 6541862635
Dimensions7.56 × 6.03 × 4.16 mm
L/W Ratio1.25
Top View
7.56 mm6.03 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6541862635
Side View
Table 64.0%CrownGirdle: STK-THKPavilion 36.9°Culet: NoneDepth 68.9%

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 2
Current: $7,272 NZD|Low: $5,938 NZD|High: $13,563 NZD|Avg: $8,236 NZD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Wholesale Diamonds Direct
November 2, 2026
Retailer 13$6,029 NZD
Retailer 12$6,652 NZD
Retailer 4$6,882 NZD
Retailer 7$7,030 NZD
Retailer 9$7,031 NZD
Retailer 2$7,241 NZD
Retailer 1$7,272 NZD
Retailer 17$7,354 NZD
Retailer 14$7,559 NZD
Retailer 10$7,607 NZD
Retailer 3$7,749 NZD
Retailer 6$7,859 NZD
Retailer 16$8,016 NZD
Retailer 18$8,150 NZD
Retailer 8$8,167 NZD
Retailer 15$9,014 NZD
Retailer 5$10,075 NZD
Retailer 11$12,690 NZD
Wholesale Diamonds Direct$13,060 NZD

19 data points across 19 retailers

21 retailers$6,029 NZD to $12,690 NZD

A
Cheapest Retailer
-
$6,029 NZD
HK$26,500 HKD
A
Retailer 2
-
$6,652 NZD
$3,743 USD
View
A
Retailer 3
-
$6,882 NZD
€3,688 EUR
View
A
Retailer 4
-
$7,030 NZD
$3,956 USD
View
A
Retailer 5
-
$7,031 NZD
$3,956 USD
View
A
Retailer 6
-
$7,241 NZD
$4,074 USD
View
A
Retailer 7
-
$7,272 NZD
A$6,295 AUD
View
A
Retailer 8
-
$7,354 NZD
$4,138 USD
View
Final sale: no returns
A
Retailer 9
-
$7,559 NZD
£3,349 GBP
View
A
Retailer 10
-
$7,607 NZD
$4,280 USD
View
B+
Retailer 11
-
$7,749 NZD
$4,360 USD
View
A
Retailer 12
-
$7,859 NZD
$4,422 USD
View
B+
Retailer 13
-
$8,016 NZD
$4,510 USD
View
A
Retailer 14
-
$8,150 NZD
£3,611 GBP
View
Retailer 15
-
$8,167 NZD
$4,595 USD
View
Price last confirmed 13 days ago
B+
Retailer 16
-
$8,581 NZD
A$7,428 AUD
View
Retailer 17
-
$8,608 NZD
A$7,451 AUD
View
Price last confirmed 23 days ago
B+
Retailer 18
-
$9,014 NZD
€4,830 EUR
View
B+
Retailer 19
-
$10,075 NZD
ZAR 91,576 ZAR
View
B
Retailer 20
-
$12,690 NZD
£5,622 GBP
View
Most Expensive
Wholesale Diamonds Direct
425965099 · Oct 23
$13,060 NZD
$7,348 USD
View
Price last confirmed 9 days ago
20 more retailers have this diamond
Prices start from $6,029 NZDSave up to $6,661 NZD

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
$6,029 NZD