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Marquise|Natural|GIA

1.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2548810416

Certificate GIA 2548810416

Diamond specifications and retailer prices

From $15,032 NZD
SGD 11,449 SGD
As of November 1, 2026
Save $11,910 NZD (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $26,943 NZD at With Clarity · As of November 1, 2026
View at With Clarity

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded E 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 2548810416. Listed at 16 retailers as of November 1, 2026, with prices from $15,032 to $26,943, a $11,910 spread on the same certified stone. With Clarity lists it at $26,943. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.57°
Pavilion angle38.28°
OriginNatural
Grading LabGIA
CertificateGIA 2548810416
Dimensions11.35 × 6.00 × 3.75 mm
L/W Ratio1.89
Top View
11.35 mm6.00 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2548810416
Side View
Table 57.0%Crown 39.57°Girdle: STK-THKPavilion 38.28°Culet: NoneDepth 62.5%

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: $22,161 NZD|Low: $15,032 NZD|High: $27,491 NZD|Avg: $19,224 NZD|-5.9%
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
With Clarity
November 1, 2026
Retailer 10$15,032 NZD
Retailer 11$15,782 NZD
Retailer 6$16,251 NZD
Retailer 13$16,273 NZD
Retailer 9$16,543 NZD
Retailer 14$16,620 NZD
Retailer 7$16,787 NZD
Retailer 12$16,820 NZD
Retailer 8$19,148 NZD
Retailer 3$19,230 NZD
Retailer 2$19,416 NZD
Retailer 5$19,872 NZD
Retailer 1$22,161 NZD
Retailer 4$23,627 NZD
With Clarity$26,943 NZD

32 data points across 15 retailers

16 retailers$15,032 NZD to $26,943 NZD

A
Cheapest Retailer
-
$15,032 NZD
SGD 11,449 SGD
A
Retailer 2
-
$15,782 NZD
$8,895 USD
View
A
Retailer 3
-
$16,251 NZD
$9,159 USD
View
A
Retailer 4
-
$16,273 NZD
SGD 12,394 SGD
View
A
Retailer 5
-
$16,543 NZD
$9,324 USD
View
A
Retailer 6
-
$16,620 NZD
$9,367 USD
View
A
Retailer 7
-
$16,787 NZD
£7,450 GBP
View
A
Retailer 8
-
$16,820 NZD
$9,480 USD
View
B+
Retailer 9
-
$19,148 NZD
€10,278 EUR
View
B+
Retailer 10
-
$19,230 NZD
$10,838 USD
View
B+
Retailer 11
-
$19,416 NZD
$10,943 USD
View
B+
Retailer 12
-
$19,872 NZD
$11,200 USD
View
B+
Retailer 13
-
$20,821 NZD
$11,735 USD
View
B+
Retailer 14
-
$22,161 NZD
$12,490 USD
View
B+
Retailer 15
-
$23,627 NZD
$13,316 USD
View
Most Expensive
B
With Clarity
2548810416 · Nov 1
$26,943 NZD
$15,185 USD
View
15 more retailers have this diamond
Prices start from $15,032 NZDSave up to $11,910 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
$15,032 NZD