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Marquise|Natural|GIA

1.71ct D SI2 Marquise Natural Diamond

ID • D/SI2 • GIA 02

Certificate GIA 02

Diamond specifications and retailer prices

From £8,699 GBP
$11,656 USD
As of October 31, 2026
Save £2,086 GBP (19%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £10,785 GBP at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.71ct natural marquise diamond

This 1.71ct natural marquise sits in the one-and-a-half to two carat band, graded D 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. Listed at 3 retailers as of October 31, 2026, with prices from £8,699 to £10,785, a £2,086 spread on the same certified stone. Blue Nile lists it at £10,785. 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
D
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 02
Dimensions13.41 × 6.25 × 3.65 mm
L/W Ratio2.15
Top View
13.41 mm6.25 mm1.71 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 02
Side View
Table 64.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.4%

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 31
Current: £10,785 GBP|Low: £8,699 GBP|High: £11,002 GBP|Avg: £9,615 GBP|-2.0%
Blue Nile
Retailer 2
Retailer 3
October 10, 2026
Retailer 3£8,699 GBP
Retailer 2£9,304 GBP
Blue Nile£10,785 GBP

4 data points across 3 retailers

3 retailers£8,699 GBP to £10,785 GBP

A
Cheapest Retailer
-
£8,699 GBP
$11,656 USD
B+
Retailer 2
-
£9,304 GBP
$12,466 USD
View
Most Expensive
B
Blue Nile
28597955 · Oct 31
£10,785 GBP
$14,451 USD
View
2 more retailers have this diamond
Prices start from £8,699 GBPSave up to £2,086 GBP

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
1.71ct Marquise
£8,699 GBP