Marquise|Natural|GIA

1.70ct F SI1 Marquise Natural Diamond

EX • F/SI1

Diamond specifications and retailer prices

From €10,796 EUR
$12,109 USD
As of October 27, 2026
Save €7,686 EUR (42%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €18,482 EUR at NZ Jewellers · As of October 6, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 4 retailers as of October 27, 2026, with a 71% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
Dimensions11.66 × 5.99 × 3.87 mm
L/W Ratio1.95
Top View
11.66 mm5.99 mm1.70 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 64.6%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: €18,482 EUR|Low: €10,796 EUR|High: €19,108 EUR|Avg: €14,549 EUR|-3.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
October 27, 2026
Retailer 3€10,796 EUR
Retailer 2€12,315 EUR
Retailer 4€14,919 EUR
NZ Jewellers€18,482 EUR

6 data points across 4 retailers

4 retailers€10,796 EUR to €18,482 EUR

B
Cheapest Retailer
-
€10,796 EUR
$12,109 USD
B
Retailer 2
-
€12,315 EUR
$13,812 USD
View
C
Retailer 3
-
€18,482 EUR
$20,730 USD
View
Most Expensive
NZ Jewellers
de9054bc-7d18-49d9-abd1-3fa5f1bcc9ad · Oct 6
€18,482 EUR
$20,730 USD
View
Price last confirmed 27 days ago
3 more retailers have this diamond
Prices start from €10,796 EURSave up to €7,686 EUR

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
€10,796 EUR