CaratHunter
Plans
Marquise|Natural|GIA

1.00ct G SI1 Marquise Natural Diamond

VG • G/SI1 • GIA 6502138329

Certificate GIA 6502138329

Diamond specifications and retailer prices

From £2,341 GBP
As of November 6, 2026
Save £2,556 GBP (52%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,897 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6502138329. Listed at 14 retailers as of November 5, 2026, with prices from £2,341 to £4,897, a £2,556 spread on the same certified stone. NZ Jewellers lists it at £4,897. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
G
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishGood
SymmetryFair
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6502138329
Dimensions9.08 × 5.45 × 3.23 mm
L/W Ratio1.67
Top View
9.08 mm5.45 mm1.00 ctG / SI1
OriginNatural
CutVery Good
PolishGood
SymmetryFair
FluorescenceNone
CertificateGIA 6502138329
Side View
Table 61.0%CrownGirdle: THN-ETKPavilionCulet: NoneDepth 59.2%

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 6
Current: £4,897 GBP|Low: £2,471 GBP|High: £4,897 GBP|Avg: £3,115 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 4£2,495 GBP
Retailer 3£2,507 GBP
Retailer 9£2,529 GBP
Retailer 2£2,645 GBP
Retailer 5£2,693 GBP
Retailer 11£2,811 GBP
Retailer 13£2,811 GBP
Retailer 7£2,891 GBP
Retailer 10£2,918 GBP
Retailer 6£3,082 GBP
Retailer 12£3,243 GBP
Retailer 8£4,687 GBP
NZ Jewellers£4,897 GBP

43 data points across 13 retailers

14 retailers£2,341 GBP to £4,897 GBP

B+
Cheapest Retailer
-
£2,341 GBP
B+
Retailer 2
-
£2,495 GBP
View
B+
Retailer 3
-
£2,507 GBP
View
B+
Retailer 4
-
£2,529 GBP
View
B
Retailer 5
-
£2,645 GBP
View
B
Retailer 6
-
£2,693 GBP
View
B
Retailer 7
-
£2,811 GBP
View
Retailer 8
-
£2,811 GBP
View
Price last confirmed 8 days ago
B
Retailer 9
-
£2,891 GBP
View
B
Retailer 10
-
£2,918 GBP
View
B
Retailer 11
-
£3,082 GBP
View
B
Retailer 12
-
£3,243 GBP
View
C
Retailer 13
-
£4,687 GBP
View
Most Expensive
C
NZ Jewellers
6d204569-6177-4360-a885-dd2b9b3973a1 · Nov 5
£4,897 GBP
$6,554 USD
View
13 more retailers have this diamond
Prices start from £2,341 GBPSave up to £2,556 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
£2,341 GBP