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Marquise|Natural|GIA

1.70ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 2556223740

Certificate GIA 2556223740

Diamond specifications and retailer prices

From $10,557 USD
As of November 1, 2026
Save $8,407 USD (44%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $18,964 USD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.7ct natural marquise diamond

This 1.7ct natural marquise sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556223740. Listed at 12 retailers as of October 30, 2026, with prices from $10,557 to $18,964, a $8,407 spread on the same certified stone. NZ Jewellers lists it at $18,964. 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
F
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2556223740
Dimensions11.27 × 6.22 × 3.97 mm
L/W Ratio1.81
Top View
11.27 mm6.22 mm1.70 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556223740
Side View
Table 60.0%CrownGirdlePavilionCulet: NDepth 63.8%

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 1
Current: $12,820 USD|Low: $10,430 USD|High: $17,984 USD|Avg: $13,387 USD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 6$10,557 USD
Retailer 5$11,377 USD
Retailer 7$11,473 USD
Retailer 4$12,204 USD
Retailer 8$12,516 USD
Retailer 1$12,820 USD
Retailer 9$14,223 USD
Retailer 2$14,333 USD
Retailer 3$17,770 USD

41 data points across 9 retailers

12 retailers$10,557 USD to $18,964 USD

B+
Cheapest Retailer
-
$10,557 USD
B+
Retailer 2
-
$11,377 USD
View
Final sale: no returns
B+
Retailer 3
-
$11,378 USD
View
B+
Retailer 4
-
$11,473 USD
View
B+
Retailer 5
-
$12,204 USD
£9,610 GBP
View
B
Retailer 6
-
$12,326 USD
View
B
Retailer 7
-
$12,516 USD
View
B+
Retailer 8
-
$12,820 USD
£10,094 GBP
View
B
Retailer 9
-
$14,223 USD
View
B
Retailer 10
-
$14,333 USD
€13,650 EUR
View
B
Retailer 11
-
$17,770 USD
£13,992 GBP
View
Most Expensive
B
NZ Jewellers
f06bab0f-8ec7-407a-bdd4-1c9393d8ce34 · Oct 30
$18,964 USD
View
11 more retailers have this diamond
Prices start from $10,557 USDSave up to $8,407 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+
1.70ct Marquise
$10,557 USD