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Round|Natural|GIA

1.27ct G IF Round Natural Diamond

EX • G/IF • GIA 6451718917

Certificate GIA 6451718917

Diamond specifications and retailer prices

From £15,986 GBP
As of November 5, 2026
21 retailers carry this diamond
Most expensive: £15,986 GBP at Diamond Quarter
View at Diamond Quarter

About this 1.27ct natural round diamond

This 1.27ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 6451718917. Listed at 21 retailers as of November 5, 2026. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.27
Carat
G
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
OriginNatural
Grading LabGIA
CertificateGIA 6451718917
Dimensions7.10 × 7.06 × 4.18 mm
L/W Ratio1.01
Top View
7.10 mm7.06 mm1.27 ctG / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6451718917
Side View
Table 60.0%Crown 33.5°Girdle: THN-MEDPavilionCulet: NoneDepth 59.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: £6,614 GBP|Low: £5,485 GBP|High: £10,091 GBP|Avg: £7,148 GBP|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 29, 2026
Retailer 12£5,509 GBP
Retailer 5£5,602 GBP
Retailer 13£5,648 GBP
Retailer 4£5,955 GBP
Retailer 3£5,983 GBP
Retailer 6£6,446 GBP
Retailer 10£6,609 GBP
Retailer 1£6,614 GBP
Retailer 2£6,861 GBP
Retailer 8£7,806 GBP
Retailer 9£8,587 GBP
Retailer 11£8,634 GBP
Retailer 7£10,024 GBP

33 data points across 13 retailers

21 retailers

Retailer 1
-
£5,509 GBP
Price last confirmed 16 days ago
Retailer 2
-
£5,602 GBP
View
Price last confirmed 9 days ago
Retailer 3
-
£5,648 GBP
View
Price last confirmed 8 days ago
Retailer 4
-
£5,955 GBP
View
Price last confirmed 8 days ago
Retailer 5
-
£6,376 GBP
View
Price last confirmed 12 days ago
Retailer 6
-
£6,446 GBP
View
Price last confirmed 8 days ago
Retailer 7
-
£6,482 GBP
View
Price last confirmed 36 days ago
Retailer 8
-
£6,582 GBP
View
Price last confirmed 38 days ago
Retailer 9
-
£6,609 GBP
View
Price last confirmed 14 days ago
Retailer 10
-
£6,614 GBP
View
Price last confirmed 8 days ago
Retailer 11
-
£6,861 GBP
View
Price last confirmed 8 days ago
Retailer 12
-
£6,861 GBP
View
Price last confirmed 32 days ago
Retailer 13
-
£7,154 GBP
View
Price last confirmed 8 days ago
Retailer 14
-
£7,479 GBP
View
Price last confirmed 38 days ago
Retailer 15
-
£7,806 GBP
View
Price last confirmed 9 days ago
Retailer 16
-
£7,878 GBP
View
Price last confirmed 14 days ago
Retailer 17
-
£8,587 GBP
View
Price last confirmed 9 days ago
Retailer 18
-
£8,634 GBP
View
Price last confirmed 15 days ago
Retailer 19
-
£10,024 GBP
View
Price last confirmed 8 days ago
Retailer 20
-
£11,967 GBP
View
Price last confirmed 39 days ago
Most Expensive
B
Diamond Quarter
1.27IFG64171BF4N · Nov 5
£15,986 GBP
View
20 more retailers have this diamond

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
1.27ct Round
£15,986 GBP