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Marquise|Natural|GIA

1.70ct I SI2 Marquise Natural Diamond

ID • I/SI2 • GIA 5556191720

Certificate GIA 5556191720

Diamond specifications and retailer prices

From $19,206 NZD
$10,806 USD
As of November 2, 2026
Save $10,352 NZD (35%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $29,558 NZD at MOH London · As of November 2, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5556191720. Listed at 5 retailers as of November 2, 2026, with prices from $19,206 to $29,558, a $10,352 spread on the same certified stone. MOH London lists it at $29,558. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5556191720
Dimensions11.92 × 6.36 × 3.65 mm
L/W Ratio1.87
Girdle conditionFaceted
Culet sizeNone
Top View
11.92 mm6.36 mm1.70 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5556191720
Side View
Table 57.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 57.4%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: $29,558 NZD|Low: $19,206 NZD|High: $29,914 NZD|Avg: $23,517 NZD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 6$19,206 NZD
Retailer 4$20,284 NZD
Retailer 2$22,075 NZD
Retailer 3$22,556 NZD
Retailer 5$26,980 NZD
MOH London$29,558 NZD

24 data points across 6 retailers

5 retailers$19,206 NZD to $29,558 NZD

B+
Cheapest Retailer
-
$19,206 NZD
$10,806 USD
B+
Retailer 2
-
$20,284 NZD
£8,987 GBP
View
B
Retailer 3
-
$22,075 NZD
£9,780 GBP
View
B
Retailer 4
-
$22,556 NZD
€12,087 EUR
View
Most Expensive
B
MOH London
0CEAF8FE2 · Nov 2
$29,558 NZD
£13,095 GBP
View
4 more retailers have this diamond
Prices start from $19,206 NZDSave up to $10,352 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.

B+
1.70ct Marquise
$19,206 NZD