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Marquise|Natural|GIA

1.51ct D SI2 Marquise Natural Diamond

EX • D/SI2 • GIA 2556189473

Certificate GIA 2556189473

Diamond specifications and retailer prices

From $9,070 AUD
SGD 8,610 SGD
As of November 1, 2026
Save $3,010 AUD (25%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $12,081 AUD at The Diamond Guys · As of November 2, 2026
View at The Diamond Guys

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556189473. Listed at 9 retailers as of November 1, 2026, with prices from $9,070 to $12,081, a $3,010 spread on the same certified stone. The Diamond Guys lists it at $12,081. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle38.25°
OriginNatural
Grading LabGIA
CertificateGIA 2556189473
Dimensions11.31 × 5.98 × 3.69 mm
L/W Ratio1.89
Top View
11.31 mm5.98 mm1.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556189473
Side View
Table 59.0%Crown 39.8°Girdle: STK-THKPavilion 38.25°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $10,009 AUD|Low: $9,070 AUD|High: $12,612 AUD|Avg: $10,602 AUD|-8.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 4$9,070 AUD
Retailer 3$9,323 AUD
Retailer 5$9,442 AUD
Retailer 8$9,730 AUD
Retailer 1$10,009 AUD
Retailer 2$10,136 AUD
Retailer 7$11,335 AUD
Retailer 6$11,610 AUD
Retailer 9$12,000 AUD

43 data points across 9 retailers

9 retailers$9,070 AUD to $12,081 AUD

A
Cheapest Retailer
-
$9,070 AUD
SGD 8,610 SGD
A
Retailer 2
-
$9,323 AUD
$6,549 USD
View
A
Retailer 3
-
$9,442 AUD
SGD 8,963 SGD
View
A
Retailer 4
-
$9,730 AUD
$6,835 USD
View
A
Retailer 5
-
$10,009 AUD
£5,536 GBP
View
A
Retailer 6
-
$10,136 AUD
$7,120 USD
View
A
Retailer 7
-
$11,335 AUD
$7,963 USD
View
A
Retailer 8
-
$11,610 AUD
$8,155 USD
View
Most Expensive
A
The Diamond Guys
1955282050 · Nov 2
$12,081 AUD
$8,486 USD
View
8 more retailers have this diamond
Prices start from $9,070 AUDSave up to $3,010 AUD

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
$9,070 AUD