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Marquise|Natural|GIA

1.00ct H I1 Marquise Natural Diamond

ID • H/I1 • GIA 6522999305

Certificate GIA 6522999305

Diamond specifications and retailer prices

From £1,677 GBP
$2,250 USD
As of November 1, 2026
Save £2,607 GBP (61%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £4,283 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded H colour (near-colourless) and I1 clarity (included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6522999305. Listed at 7 retailers as of October 30, 2026, with prices from £1,677 to £4,283, a £2,607 spread on the same certified stone. NZ Jewellers lists it at £4,283. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
H
Colour
I1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6522999305
Dimensions9.88 × 5.10 × 3.26 mm
L/W Ratio1.94
Cert comments
Additional twinning wisps, clouds, pinpoints, internal graining and surface graining are not shown.
Key to symbols
Crystal, Feather, Twinning Wisp, Cavity, Needle, Natural
Top View
9.88 mm5.10 mm1.00 ctH / I1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6522999305
Side View
Table 58.0%CrownGirdlePavilionCulet: NoneDepth 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: £2,398 GBP|Low: £1,360 GBP|High: £2,438 GBP|Avg: £1,981 GBP|+2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 7£1,360 GBP
Retailer 2£1,677 GBP
Retailer 4£1,856 GBP
Retailer 3£1,942 GBP
Retailer 5£2,142 GBP
Retailer 1£2,398 GBP
Retailer 6£2,438 GBP

17 data points across 7 retailers

7 retailers£1,677 GBP to £4,283 GBP

B+
Cheapest Retailer
-
£1,677 GBP
$2,250 USD
B+
Retailer 2
-
£1,856 GBP
$2,491 USD
View
B+
Retailer 3
-
£1,856 GBP
$2,491 USD
View
B+
Retailer 4
-
£1,942 GBP
$2,606 USD
View
B
Retailer 5
-
£2,142 GBP
$2,874 USD
View
B
Retailer 6
-
£2,398 GBP
€3,065 EUR
View
Most Expensive
C
NZ Jewellers
c34ee281-953b-4c2c-9eaa-5458e3c574aa · Oct 30
£4,283 GBP
$5,748 USD
View
6 more retailers have this diamond
Prices start from £1,677 GBPSave up to £2,607 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+
1.00ct Marquise
£1,677 GBP