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Cushion|Natural|GIA

1.51ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 2556191991

Certificate GIA 2556191991

Diamond specifications and retailer prices

From $8,281 NZD
HK$36,400 HKD
As of November 1, 2026
Save $9,167 NZD (53%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $17,448 NZD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556191991. Listed at 18 retailers as of October 28, 2026, with prices from $8,281 to $17,448, a $9,167 spread on the same certified stone. Queensmith lists it at $17,448. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2556191991
Dimensions8.09 × 5.59 × 3.82 mm
L/W Ratio1.45
Top View
8.09 mm5.59 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556191991
Side View
Table 65.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 68.3%

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 1
Current: $17,448 NZD|Low: $8,190 NZD|High: $17,572 NZD|Avg: $11,590 NZD|+1.9%
Queensmith
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
November 3, 2026
Retailer 11$8,281 NZD
Retailer 6$8,423 NZD
Retailer 7$8,822 NZD
Retailer 13$9,219 NZD
Retailer 14$9,431 NZD
Retailer 4$9,663 NZD
Retailer 2$10,580 NZD
Retailer 12$11,028 NZD
Retailer 5$11,307 NZD
Retailer 3$11,529 NZD
Retailer 8$12,048 NZD
Retailer 10$13,550 NZD
Retailer 9$16,247 NZD
Queensmith$17,448 NZD

29 data points across 14 retailers

18 retailers$8,281 NZD to $17,448 NZD

A
Cheapest Retailer
-
$8,281 NZD
HK$36,400 HKD
A
Retailer 2
-
$8,423 NZD
SGD 6,404 SGD
View
A
Retailer 3
-
$8,822 NZD
₹472,755 INR
View
A
Retailer 4
-
$9,219 NZD
$5,187 USD
View
Retailer 5
-
$9,431 NZD
SGD 7,171 SGD
View
Price last confirmed 7 days ago
A
Retailer 6
-
$9,663 NZD
$5,437 USD
View
B+
Retailer 7
-
$10,129 NZD
$5,699 USD
View
B+
Retailer 8
-
$10,131 NZD
$5,700 USD
View
B+
Retailer 9
-
$10,580 NZD
£4,687 GBP
View
B+
Retailer 10
-
$11,028 NZD
$6,205 USD
View
Retailer 11
-
$11,029 NZD
A$9,547 AUD
View
Price last confirmed 30 days ago
B+
Retailer 12
-
$11,296 NZD
A$9,778 AUD
View
B+
Retailer 13
-
$11,307 NZD
$6,362 USD
View
B+
Retailer 14
-
$11,529 NZD
$6,487 USD
View
B+
Retailer 15
-
$12,048 NZD
€6,456 EUR
View
B+
Retailer 16
-
$13,550 NZD
ZAR 123,162 ZAR
View
B
Retailer 17
-
$16,247 NZD
£7,198 GBP
View
Most Expensive
B
Queensmith
2556191991 · Oct 28
$17,448 NZD
£7,730 GBP
View
17 more retailers have this diamond
Prices start from $8,281 NZDSave up to $9,167 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
$8,281 NZD