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Marquise|Natural|GIA

0.71ct I SI1 Marquise Natural Diamond

EX • I/SI1 • GIA 6551455349

Certificate GIA 6551455349

Diamond specifications and retailer prices

From £678 GBP
$910 USD
As of November 1, 2026
Save £811 GBP (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,490 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 0.71ct natural marquise diamond

This 0.71ct natural marquise sits in the half to three-quarter carat band, graded I 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 6551455349. Listed at 14 retailers as of November 1, 2026, with prices from £678 to £1,490, a £811 spread on the same certified stone. MOH London lists it at £1,490. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.8°
Pavilion angle41.57°
OriginNatural
Grading LabGIA
CertificateGIA 6551455349
Dimensions8.88 × 4.68 × 3.01 mm
L/W Ratio1.90
Culet sizeNone
Top View
8.88 mm4.68 mm0.71 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6551455349
Side View
Table 59.0%Crown 36.8°Girdle: STK-THKPavilion 41.57°Culet: NoneDepth 64.5%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £1,490 GBP|Low: £365 GBP|High: £1,490 GBP|Avg: £694 GBP
MOH London
Retailer 2
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November 2, 2026
Retailer 10£365 GBP
Retailer 20£457 GBP
Retailer 4£526 GBP
Retailer 9£564 GBP
Retailer 6£636 GBP
Retailer 13£678 GBP
Retailer 8£698 GBP
Retailer 12£711 GBP
Retailer 17£724 GBP
Retailer 16£735 GBP
Retailer 3£736 GBP
Retailer 14£737 GBP
Retailer 7£815 GBP
Retailer 5£839 GBP
Retailer 15£846 GBP
Retailer 18£850 GBP
Retailer 2£919 GBP
Retailer 11£937 GBP
Retailer 19£1,140 GBP
MOH London£1,490 GBP

18 data points across 20 retailers

14 retailers£678 GBP to £1,490 GBP

Retailer 1
-
£457 GBP
SGD 829 SGD
Price last confirmed 11 days ago
Retailer 2
-
£526 GBP
SGD 954 SGD
View
Price last confirmed 17 days ago
B+
Retailer 3
-
£678 GBP
$910 USD
View
Retailer 4
-
£698 GBP
$937 USD
View
Price last confirmed 19 days ago
B+
Retailer 5
-
£711 GBP
$954 USD
View
B+
Retailer 6
-
£724 GBP
$971 USD
View
B+
Retailer 7
-
£735 GBP
$986 USD
View
B+
Retailer 8
-
£737 GBP
$989 USD
View
Retailer 9
-
£815 GBP
$1,093 USD
View
Price last confirmed 18 days ago
B+
Retailer 10
-
£846 GBP
$1,135 USD
View
B+
Retailer 11
-
£850 GBP
$1,141 USD
View
B
Retailer 12
-
£919 GBP
View
B
Retailer 13
-
£1,140 GBP
€1,457 EUR
View
Most Expensive
B
MOH London
299C1D71B · Nov 1
£1,490 GBP
View
13 more retailers have this diamond
Prices start from £678 GBPSave up to £811 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
£678 GBP