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Marquise|Natural|GIA

1.00ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 2241069416

Certificate GIA 2241069416

Diamond specifications and retailer prices

From £1,421 GBP
As of November 3, 2026
Save £1,141 GBP (45%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,562 GBP at Helzberg Diamonds · As of November 3, 2026
View at Helzberg Diamonds

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2241069416. Listed at 15 retailers as of November 3, 2026, with prices from £1,421 to £2,562, a £1,141 spread on the same certified stone. Helzberg Diamonds lists it at £2,562. 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
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle43.7°
Pavilion angle40.11°
OriginNatural
Grading LabGIA
CertificateGIA 2241069416
Dimensions9.23 × 5.06 × 3.41 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.23 mm5.06 mm1.00 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2241069416
Side View
Table 60.0%Crown 43.7°Girdle: THK-VTKPavilion 40.11°Culet: NoneDepth 67.4%

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 3
Current: £2,562 GBP|Low: £1,416 GBP|High: £2,642 GBP|Avg: £1,797 GBP|-3.0%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 4, 2026
Retailer 12£1,421 GBP
Retailer 10£1,445 GBP
Retailer 6£1,447 GBP
Retailer 4£1,459 GBP
Retailer 5£1,480 GBP
Retailer 3£1,555 GBP
Retailer 15£1,556 GBP
Retailer 2£1,564 GBP
Retailer 7£1,670 GBP
Retailer 13£1,704 GBP
Retailer 14£1,827 GBP
Retailer 9£2,010 GBP
Retailer 8£2,180 GBP
Retailer 11£2,347 GBP
Helzberg Diamonds£2,562 GBP

41 data points across 15 retailers

15 retailers£1,421 GBP to £2,562 GBP

A
Cheapest Retailer
-
£1,421 GBP
B+
Retailer 2
-
£1,445 GBP
View
B+
Retailer 3
-
£1,447 GBP
View
B+
Retailer 4
-
£1,459 GBP
View
B+
Retailer 5
-
£1,480 GBP
View
A
Retailer 6
-
£1,555 GBP
View
B+
Retailer 7
-
£1,556 GBP
View
B+
Retailer 8
-
£1,564 GBP
View
B+
Retailer 9
-
£1,670 GBP
View
B+
Retailer 10
-
£1,704 GBP
View
B+
Retailer 11
-
£1,827 GBP
View
B+
Retailer 12
-
£2,010 GBP
View
B
Retailer 13
-
£2,180 GBP
View
B
Retailer 14
-
£2,347 GBP
View
Most Expensive
B
Helzberg Diamonds
XZRIIKHGMPKHM · Nov 3
£2,562 GBP
$3,436 USD
View
14 more retailers have this diamond
Prices start from £1,421 GBPSave up to £1,141 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
£1,421 GBP