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Marquise|Natural|GIA

1.51ct G SI1 Marquise Natural Diamond

VG • G/SI1 • GIA 2557053736

Certificate GIA 2557053736

Diamond specifications and retailer prices

From $14,777 SGD
£9,098 GBP
As of October 28, 2026
14 retailers carry this diamond
Most expensive: $20,718 SGD 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: $20,718 SGD|Low: $12,303 SGD|High: $20,718 SGD|Avg: $15,302 SGD
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$12,303 SGD
Retailer 11$12,431 SGD
Retailer 12$13,467 SGD
Retailer 6$13,671 SGD
Retailer 10$13,674 SGD
Retailer 7$14,002 SGD
Retailer 2$14,777 SGD
Retailer 3$15,539 SGD
Retailer 5$15,554 SGD
Retailer 9$18,044 SGD
Retailer 8$19,518 SGD
NZ Jewellers$20,718 SGD

37 data points across 12 retailers

14 retailers

Retailer 1
-
$11,534 SGD
$9,019 USD
Price last confirmed 10 days ago
Retailer 2
-
$12,303 SGD
$9,620 USD
View
Price last confirmed 10 days ago
Retailer 3
-
$12,431 SGD
$9,720 USD
View
Price last confirmed 18 days ago
Retailer 4
-
$12,534 SGD
$9,801 USD
View
Price last confirmed 11 days ago
Retailer 5
-
$13,467 SGD
$10,530 USD
View
Price last confirmed 11 days ago
Retailer 6
-
$13,671 SGD
A$16,445 AUD
View
Price last confirmed 11 days ago
Retailer 7
-
$13,674 SGD
$10,692 USD
View
Price last confirmed 17 days ago
Retailer 8
-
$14,253 SGD
$11,145 USD
View
Price last confirmed 12 days ago
B
Retailer 9
-
$14,777 SGD
£9,098 GBP
View
Retailer 10
-
$15,539 SGD
$12,150 USD
View
Price last confirmed 13 days ago
Retailer 11
-
$16,357 SGD
$12,790 USD
View
Price last confirmed 11 days ago
Retailer 12
-
$18,044 SGD
ZAR 227,926 ZAR
View
Price last confirmed 16 days ago
Retailer 13
-
$19,518 SGD
£12,017 GBP
View
Price last confirmed 13 days ago
Most Expensive
NZ Jewellers
669feccd-75f5-4c5a-9ddc-19dd91e4f013 · Oct 21
$20,718 SGD
$16,200 USD
View
Price last confirmed 13 days ago
13 more retailers have this diamond
Prices start from $14,777 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.

B
1.51ct Marquise
$14,777 SGD