Marquise|Natural|GIA

1.71ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 2557313720

Certificate GIA 2557313720

Diamond specifications and retailer prices

From $12,543 USD
As of November 1, 2026
Save $8,571 USD (41%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $21,114 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.71ct natural marquise diamond

This 1.71ct natural marquise sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557313720. Listed at 17 retailers as of November 1, 2026, with prices from $12,543 to $21,114, a $8,571 spread on the same certified stone. MOH London lists it at $21,114. 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

1.71
Carat
H
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.82°
Pavilion angle38.37°
OriginNatural
Grading LabGIA
CertificateGIA 2557313720
Dimensions11.66 × 6.16 × 3.86 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.66 mm6.16 mm1.71 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557313720
Side View
Table 58.0%Crown 39.82°Girdle: MED-THKPavilion 38.37°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $21,114 USD|Low: $8,875 USD|High: $21,340 USD|Avg: $14,600 USD|-1.1%
MOH London
Retailer 2
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Retailer 11
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Retailer 22
November 2, 2026
Retailer 10$8,875 USD
Retailer 12$11,321 USD
Retailer 9$11,877 USD
Retailer 15$12,326 USD
Retailer 3$12,543 USD
Retailer 20$12,955 USD
Retailer 18$13,280 USD
Retailer 22$13,632 USD
Retailer 11$14,031 USD
Retailer 6$14,433 USD
Retailer 13$14,438 USD
Retailer 19$14,524 USD
Retailer 21$14,837 USD
Retailer 4$14,870 USD
Retailer 8$14,870 USD
Retailer 14$14,969 USD
Retailer 7$15,370 USD
Retailer 5$15,847 USD
Retailer 2$17,030 USD
Retailer 17$18,872 USD
Retailer 16$19,862 USD
MOH London$21,114 USD

22 data points across 22 retailers

17 retailers$12,543 USD to $21,114 USD

B+
Cheapest Retailer
-
$12,543 USD
B
Retailer 2
-
$12,955 USD
View
Final sale: no returns
B
Retailer 3
-
$13,280 USD
View
B
Retailer 4
-
$13,632 USD
View
B
Retailer 5
-
$14,433 USD
View
B
Retailer 6
-
$14,438 USD
£11,368 GBP
View
Retailer 7
-
$14,524 USD
A$22,345 AUD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$14,837 USD
View
B
Retailer 9
-
$14,870 USD
View
B
Retailer 10
-
$14,870 USD
View
Retailer 11
-
$15,209 USD
View
Price last confirmed 38 days ago
B
Retailer 12
-
$15,370 USD
View
B
Retailer 13
-
$15,847 USD
View
B
Retailer 14
-
$17,030 USD
€16,219 EUR
View
B
Retailer 15
-
$18,872 USD
£14,860 GBP
View
B
Retailer 16
-
$19,862 USD
ZAR 320,865 ZAR
View
Most Expensive
B
MOH London
0C76255AB · Nov 1
$21,114 USD
£16,625 GBP
View
16 more retailers have this diamond
Prices start from $12,543 USDSave up to $8,571 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.

B+
1.71ct Marquise
$12,543 USD