Marquise|Natural|GIA

1.51ct G SI1 Marquise Natural Diamond

VG • G/SI1 • GIA 2557053736

Certificate GIA 2557053736

Diamond specifications and retailer prices

From $20,535 NZD
£9,098 GBP
As of October 28, 2026
14 retailers carry this diamond
Most expensive: $28,792 NZD at NZ Jewellers · As of October 21, 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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2557053736. Listed at 14 retailers as of October 28, 2026. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
G
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle40.83°
Pavilion angle39.35°
OriginNatural
Grading LabGIA
CertificateGIA 2557053736
Dimensions11.09 × 5.97 × 3.68 mm
L/W Ratio1.86
Top View
11.09 mm5.97 mm1.51 ctG / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2557053736
Side View
Table 60.0%Crown 40.83°Girdle: THN-VTKPavilion 39.35°Culet: NoneDepth 61.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 28
Current: $28,792 NZD|Low: $17,098 NZD|High: $28,792 NZD|Avg: $21,265 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 28, 2026
Retailer 4$17,098 NZD
Retailer 11$17,275 NZD
Retailer 12$18,715 NZD
Retailer 6$18,998 NZD
Retailer 10$19,003 NZD
Retailer 7$19,459 NZD
Retailer 2$20,535 NZD
Retailer 3$21,594 NZD
Retailer 5$21,616 NZD
Retailer 9$25,075 NZD
Retailer 8$27,124 NZD
NZ Jewellers$28,792 NZD

37 data points across 12 retailers

14 retailers

Retailer 1
-
$16,029 NZD
$9,019 USD
Price last confirmed 10 days ago
Retailer 2
-
$17,098 NZD
$9,620 USD
View
Price last confirmed 10 days ago
Retailer 3
-
$17,275 NZD
$9,720 USD
View
Price last confirmed 17 days ago
Retailer 4
-
$17,419 NZD
$9,801 USD
View
Price last confirmed 11 days ago
Retailer 5
-
$18,715 NZD
$10,530 USD
View
Price last confirmed 11 days ago
Retailer 6
-
$18,998 NZD
A$16,445 AUD
View
Price last confirmed 11 days ago
Retailer 7
-
$19,003 NZD
$10,692 USD
View
Price last confirmed 17 days ago
Retailer 8
-
$19,808 NZD
$11,145 USD
View
Price last confirmed 12 days ago
B
Retailer 9
-
$20,535 NZD
£9,098 GBP
View
Retailer 10
-
$21,594 NZD
$12,150 USD
View
Price last confirmed 12 days ago
Retailer 11
-
$22,732 NZD
$12,790 USD
View
Price last confirmed 10 days ago
Retailer 12
-
$25,075 NZD
ZAR 227,926 ZAR
View
Price last confirmed 16 days ago
Retailer 13
-
$27,124 NZD
£12,017 GBP
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
669feccd-75f5-4c5a-9ddc-19dd91e4f013 · Oct 21
$28,792 NZD
$16,200 USD
View
Price last confirmed 12 days ago
13 more retailers have this diamond
Prices start from $20,535 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.

B
1.51ct Marquise
$20,535 NZD