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Marquise|Natural|GIA

1.00ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 2557316373

Certificate GIA 2557316373

Diamond specifications and retailer prices

From £1,954 GBP
₹249,288 INR
As of November 2, 2026
Save £578 GBP (23%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £2,531 GBP at GemTrove · As of November 2, 2026
View at GemTrove

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557316373. Listed at 8 retailers as of November 2, 2026, with prices from £1,954 to £2,531, a £578 spread on the same certified stone. GemTrove lists it at £2,531. 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

1.00
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557316373
Dimensions9.92 × 5.22 × 3.25 mm
L/W Ratio1.90
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
9.92 mm5.22 mm1.00 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557316373
Side View
Table 63.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 62.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £1,954 GBP|Low: £1,828 GBP|High: £2,584 GBP|Avg: £2,222 GBP|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 1£1,954 GBP
Retailer 3£2,094 GBP
Retailer 4£2,116 GBP
Retailer 2£2,223 GBP
Retailer 6£2,397 GBP
Retailer 5£2,485 GBP

46 data points across 6 retailers

8 retailers£1,954 GBP to £2,531 GBP

A
Cheapest Retailer
-
£1,954 GBP
₹249,288 INR
A
Retailer 2
-
£2,094 GBP
$2,806 USD
View
B+
Retailer 3
-
£2,116 GBP
$2,835 USD
View
Final sale: no returns
A
Retailer 4
-
£2,223 GBP
View
B+
Retailer 5
-
£2,397 GBP
SGD 4,341 SGD
View
B+
Retailer 6
-
£2,481 GBP
A$5,114 AUD
View
B+
Retailer 7
-
£2,485 GBP
$3,329 USD
View
Most Expensive
B+
GemTrove
GT-N-01273322-98 · Nov 2
£2,531 GBP
A$5,218 AUD
View
7 more retailers have this diamond
Prices start from £1,954 GBPSave up to £578 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
1.00ct Marquise
£1,954 GBP