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Marquise|Natural|GIA

1.00ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 1563318461

Certificate GIA 1563318461

Diamond specifications and retailer prices

From £913 GBP
As of October 31, 2026
Save £403 GBP (31%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,504 GBP at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1563318461. Listed at 13 retailers as of October 31, 2026, with a 44% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle39.79°
Pavilion angle38.47°
OriginNatural
Grading LabGIA
CertificateGIA 1563318461
Dimensions9.82 × 5.15 × 3.22 mm
L/W Ratio1.91
Culet sizeNone
Top View
9.82 mm5.15 mm1.00 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 1563318461
Side View
Table 59.0%Crown 39.79°Girdle: STK-THKPavilion 38.47°Culet: NDepth 62.5%

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: Oct 31
Current: £918 GBP|Low: £897 GBP|High: £1,510 GBP|Avg: £1,091 GBP|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Wholesale Diamonds Direct
November 5, 2026
Retailer 9£913 GBP
Retailer 1£918 GBP
Retailer 11£929 GBP
Retailer 10£940 GBP
Retailer 7£976 GBP
Retailer 4£994 GBP
Retailer 5£1,028 GBP
Retailer 12£1,033 GBP
Retailer 2£1,116 GBP
Retailer 6£1,146 GBP
Retailer 3£1,286 GBP
Retailer 8£1,316 GBP
Wholesale Diamonds Direct£1,504 GBP

41 data points across 13 retailers

13 retailers£913 GBP to £1,316 GBP

A
Cheapest Retailer
-
£913 GBP
A
Retailer 2
-
£918 GBP
View
A
Retailer 3
-
£929 GBP
View
A
Retailer 4
-
£940 GBP
View
B+
Retailer 5
-
£976 GBP
View
B+
Retailer 6
-
£994 GBP
View
B+
Retailer 7
-
£1,028 GBP
View
B+
Retailer 8
-
£1,033 GBP
View
B+
Retailer 9
-
£1,116 GBP
View
A
Retailer 10
-
£1,146 GBP
View
B+
Retailer 11
-
£1,286 GBP
View
B+
Retailer 12
-
£1,316 GBP
View
Most Expensive
Wholesale Diamonds Direct
418966411 · Oct 27
£1,504 GBP
$2,024 USD
View
Price last confirmed 10 days ago
12 more retailers have this diamond
Prices start from £913 GBPSave up to £403 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
£913 GBP