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Marquise|Natural|GIA

1.51ct G SI2 Marquise Natural Diamond

ID • G/SI2 • GIA 6565040217

Certificate GIA 6565040217

Diamond specifications and retailer prices

From $15,050 NZD
$8,468 USD
As of November 1, 2026
Save $10,056 NZD (40%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $28,908 NZD at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6565040217. Listed at 17 retailers as of November 1, 2026, with a 67% 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
G
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6565040217
Dimensions12.05 × 6.05 × 3.39 mm
L/W Ratio1.99
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Cloud
Top View
12.05 mm6.05 mm1.51 ctG / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6565040217
Side View
Table 57.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 56.1%

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: $20,252 NZD|Low: $12,733 NZD|High: $29,612 NZD|Avg: $17,294 NZD|-14.5%
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
November 2, 2026
Retailer 5$12,831 NZD
Retailer 7$13,402 NZD
Retailer 6$14,202 NZD
Retailer 2$15,050 NZD
Retailer 4$16,074 NZD
Retailer 12$16,076 NZD
Retailer 14$16,209 NZD
Retailer 8$16,240 NZD
Retailer 9$17,439 NZD
Retailer 3$18,946 NZD
Retailer 15$18,946 NZD
Retailer 13$19,528 NZD
Retailer 16$19,568 NZD
Retailer 1$20,252 NZD
Retailer 11$21,157 NZD
Retailer 10$25,107 NZD

31 data points across 16 retailers

17 retailers$15,050 NZD to $25,107 NZD

Retailer 1
-
$12,831 NZD
HK$56,400 HKD
Price last confirmed 31 days ago
Retailer 2
-
$14,202 NZD
SGD 10,798 SGD
View
Price last confirmed 31 days ago
A
Retailer 3
-
$15,050 NZD
$8,468 USD
View
B+
Retailer 4
-
$16,074 NZD
$9,044 USD
View
Final sale: no returns
B+
Retailer 5
-
$16,076 NZD
$9,045 USD
View
B+
Retailer 6
-
$16,209 NZD
$9,120 USD
View
B+
Retailer 7
-
$16,240 NZD
A$14,058 AUD
View
Retailer 8
-
$17,284 NZD
$9,725 USD
View
Price last confirmed 41 days ago
B+
Retailer 9
-
$17,439 NZD
£7,726 GBP
View
B+
Retailer 10
-
$18,946 NZD
$10,660 USD
View
B+
Retailer 11
-
$18,946 NZD
$10,660 USD
View
B
Retailer 12
-
$19,042 NZD
$10,714 USD
View
B
Retailer 13
-
$19,528 NZD
$10,988 USD
View
B+
Retailer 14
-
$19,568 NZD
$11,010 USD
View
B+
Retailer 15
-
$20,252 NZD
€10,852 EUR
View
B
Retailer 16
-
$25,107 NZD
£11,123 GBP
View
Most Expensive
NZ Jewellers
b9fa1f04-0e00-4244-9a85-fdb31e76653a · Sep 20
$28,908 NZD
$16,265 USD
View
Price last confirmed 42 days ago
16 more retailers have this diamond
Prices start from $15,050 NZDSave up to $10,056 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 Marquise
$15,050 NZD