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Marquise|Natural|GIA

0.71ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 6422171581

Certificate GIA 6422171581

Diamond specifications and retailer prices

From £1,349 GBP
As of November 6, 2026
Save £504 GBP (27%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £2,091 GBP at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 0.71ct natural marquise diamond

This 0.71ct natural marquise sits in the half to three-quarter carat band, graded H 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 6422171581. Listed at 7 retailers as of November 6, 2026, with a 37% 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

0.71
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.98°
Pavilion angle39.8°
OriginNatural
Grading LabGIA
CertificateGIA 6422171581
Dimensions9.17 × 4.58 × 2.86 mm
L/W Ratio2.00
Top View
9.17 mm4.58 mm0.71 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6422171581
Side View
Table 57.0%Crown 37.98°Girdle: ThickPavilion 39.8°Culet: NoneDepth 62.3%

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: Nov 6
Current: £2,091 GBP|Low: £370 GBP|High: £2,127 GBP|Avg: £1,371 GBP|+0.7%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4£370 GBP
Retailer 2£1,349 GBP
Retailer 3£1,695 GBP
77 Diamonds£2,091 GBP

36 data points across 4 retailers

7 retailers£1,349 GBP to £1,853 GBP

B
Cheapest Retailer
-
£1,349 GBP
Final sale: no returns
B
Retailer 2
-
£1,400 GBP
View
B
Retailer 3
-
£1,695 GBP
View
B
Retailer 4
-
£1,793 GBP
View
B
Retailer 5
-
£1,793 GBP
View
B
Retailer 6
-
£1,853 GBP
View
Most Expensive
77 Diamonds
MQMBAU2KRNNT · Nov 6
£2,091 GBP
View
Price under review
6 more retailers have this diamond
Prices start from £1,349 GBPSave up to £504 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.

B
0.71ct Marquise
£1,349 GBP