Marquise|Natural|GIA

1.51ct E SI1 Marquise Natural Diamond

EX • E/SI1 • GIA 2548810416

Certificate GIA 2548810416

Diamond specifications and retailer prices

From $8,472 USD
SGD 11,449 SGD
As of October 28, 2026
Save $6,713 USD (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $15,185 USD at With Clarity · As of October 29, 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 October 28, 2026, with prices from $8,472 to $15,185, a $6,713 spread on the same certified stone. With Clarity lists it at $15,185. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $12,490 USD|Low: $8,472 USD|High: $15,494 USD|Avg: $10,819 USD|-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
October 29, 2026
Retailer 9$8,472 USD
Retailer 11$8,895 USD
Retailer 6$9,159 USD
Retailer 13$9,172 USD
Retailer 8$9,324 USD
Retailer 14$9,367 USD
Retailer 10$9,404 USD
Retailer 12$9,480 USD
Retailer 7$10,822 USD
Retailer 3$10,838 USD
Retailer 2$10,943 USD
Retailer 5$11,200 USD
Retailer 1$12,490 USD
Retailer 4$13,316 USD
With Clarity$15,185 USD

31 data points across 15 retailers

16 retailers$8,472 USD to $15,185 USD

A
Cheapest Retailer
-
$8,472 USD
SGD 11,449 SGD
A
Retailer 2
-
$8,895 USD
View
A
Retailer 3
-
$9,159 USD
View
A
Retailer 4
-
$9,172 USD
SGD 12,394 SGD
View
A
Retailer 5
-
$9,324 USD
View
A
Retailer 6
-
$9,367 USD
View
A
Retailer 7
-
$9,404 USD
£7,404 GBP
View
A
Retailer 8
-
$9,480 USD
View
B+
Retailer 9
-
$10,822 USD
€10,307 EUR
View
B+
Retailer 10
-
$10,838 USD
View
B+
Retailer 11
-
$10,943 USD
View
B+
Retailer 12
-
$11,200 USD
View
B+
Retailer 13
-
$11,735 USD
View
B+
Retailer 14
-
$12,490 USD
View
B+
Retailer 15
-
$13,316 USD
View
Most Expensive
B
With Clarity
2548810416 · Oct 29
$15,185 USD
View
15 more retailers have this diamond
Prices start from $8,472 USDSave up to $6,713 USD

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
$8,472 USD