Marquise|Natural|GIA

1.70ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 2155352140

Certificate GIA 2155352140

Diamond specifications and retailer prices

From $4,130 USD
As of October 28, 2026
Save $4,558 USD (52%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,688 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.7ct natural marquise diamond

This 1.7ct natural marquise sits in the one-and-a-half to two carat band, graded J 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 2155352140. Listed at 15 retailers as of October 28, 2026, with prices from $4,130 to $8,688, a $4,558 spread on the same certified stone. MOH London lists it at $8,688. 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

1.70
Carat
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishGood
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2155352140
Dimensions8.01 × 6.82 × 5.07 mm
L/W Ratio1.17
Culet sizeNone
Top View
8.01 mm6.82 mm1.70 ctJ / SI1
OriginNatural
CutExcellent
PolishGood
SymmetryGood
FluorescenceNone
CertificateGIA 2155352140
Side View
Table 56.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 63.3%

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: $8,688 USD|Low: $3,590 USD|High: $8,793 USD|Avg: $5,428 USD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 9$4,130 USD
Retailer 3$4,226 USD
Retailer 8$4,308 USD
Retailer 7$4,362 USD
Retailer 10$4,561 USD
Retailer 13$4,650 USD
Retailer 5$4,898 USD
Retailer 2$5,322 USD
Retailer 11$5,499 USD
Retailer 4$5,697 USD
Retailer 6$6,705 USD
Retailer 12$7,899 USD
MOH London$8,688 USD

37 data points across 13 retailers

15 retailers$4,130 USD to $8,688 USD

A
Cheapest Retailer
-
$4,130 USD
A
Retailer 2
-
$4,226 USD
View
A
Retailer 3
-
$4,262 USD
View
B+
Retailer 4
-
$4,308 USD
View
A
Retailer 5
-
$4,310 USD
View
A
Retailer 6
-
$4,362 USD
View
B+
Retailer 7
-
$4,561 USD
View
Final sale: no returns
B+
Retailer 8
-
$4,650 USD
View
B+
Retailer 9
-
$4,898 USD
View
Retailer 10
-
$4,977 USD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
$5,322 USD
£4,191 GBP
View
Retailer 12
-
$5,499 USD
A$8,460 AUD
View
Price last confirmed 23 days ago
B+
Retailer 13
-
$6,705 USD
ZAR 108,323 ZAR
View
B
Retailer 14
-
$7,899 USD
View
Most Expensive
B
MOH London
7BE6F2E2E · Nov 1
$8,688 USD
£6,841 GBP
View
14 more retailers have this diamond
Prices start from $4,130 USDSave up to $4,558 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
1.70ct Marquise
$4,130 USD