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Marquise|Natural|GIA

1.00ct H VS1 Marquise Natural Diamond

VG • H/VS1 • GIA 2566403055

Certificate GIA 2566403055

Diamond specifications and retailer prices

From £2,970 GBP
As of November 5, 2026
Save £2,314 GBP (44%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £5,284 GBP at Helzberg Diamonds · As of November 4, 2026
View at Helzberg Diamonds

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2566403055. Listed at 18 retailers as of November 4, 2026, with prices from £2,970 to £5,284, a £2,314 spread on the same certified stone. Helzberg Diamonds lists it at £5,284. 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
H
Colour
VS1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle40.4°
Pavilion angle41.86°
OriginNatural
Grading LabGIA
CertificateGIA 2566403055
Dimensions9.66 × 5.18 × 3.37 mm
L/W Ratio1.86
Culet sizeNone
Top View
9.66 mm5.18 mm1.00 ctH / VS1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566403055
Side View
Table 62.0%Crown 40.4°Girdle: THN-THKPavilion 41.86°Culet: NDepth 65.1%

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 5
Current: £5,284 GBP|Low: £2,970 GBP|High: £5,284 GBP|Avg: £3,785 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 8
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Retailer 11
Retailer 12
Retailer 13
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Retailer 15
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Retailer 17
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Retailer 19
November 5, 2026
Retailer 5£2,970 GBP
Retailer 2£3,020 GBP
Retailer 11£3,023 GBP
Retailer 8£3,054 GBP
Retailer 4£3,124 GBP
Retailer 6£3,191 GBP
Retailer 10£3,218 GBP
Retailer 13£3,323 GBP
Retailer 7£3,604 GBP
Retailer 14£3,698 GBP
Retailer 18£3,721 GBP
Retailer 9£3,736 GBP
Retailer 15£3,800 GBP
Retailer 3£4,076 GBP
Retailer 12£4,091 GBP
Retailer 16£4,124 GBP
Retailer 17£4,974 GBP
Retailer 19£5,263 GBP
Helzberg Diamonds£5,284 GBP

21 data points across 19 retailers

18 retailers£2,970 GBP to £5,284 GBP

B+
Cheapest Retailer
-
£2,970 GBP
B+
Retailer 2
-
£3,020 GBP
View
B+
Retailer 3
-
£3,023 GBP
View
B+
Retailer 4
-
£3,054 GBP
View
B+
Retailer 5
-
£3,124 GBP
View
B+
Retailer 6
-
£3,191 GBP
View
B+
Retailer 7
-
£3,218 GBP
View
B+
Retailer 8
-
£3,323 GBP
View
B
Retailer 9
-
£3,604 GBP
View
B+
Retailer 10
-
£3,698 GBP
View
B
Retailer 11
-
£3,721 GBP
View
B
Retailer 12
-
£3,736 GBP
View
B
Retailer 13
-
£3,800 GBP
View
B
Retailer 14
-
£4,076 GBP
View
B
Retailer 15
-
£4,091 GBP
View
B
Retailer 16
-
£4,974 GBP
View
B
Retailer 17
-
£5,263 GBP
View
Most Expensive
B
Helzberg Diamonds
XZRILMMKGJGLL · Nov 4
£5,284 GBP
$7,112 USD
View
17 more retailers have this diamond
Prices start from £2,970 GBPSave up to £2,314 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
£2,970 GBP