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Round|Natural|GIA

1.27ct F SI1 Round Natural Diamond

VG • F/SI1 • GIA 6481505898

Certificate GIA 6481505898

Diamond specifications and retailer prices

From £4,516 GBP
$6,051 USD
As of November 1, 2026
Save £4,338 GBP (49%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £8,854 GBP at Diamond Quarter · As of November 2, 2026
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 F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by GIA 6481505898. Listed at 13 retailers as of November 1, 2026, with prices from £4,516 to £8,854, a £4,338 spread on the same certified stone. Diamond Quarter lists it at £8,854. 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

1.27
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
Crown angle34°
Pavilion angle42°
OriginNatural
Grading LabGIA
CertificateGIA 6481505898
Dimensions6.93 × 7.02 × 4.27 mm
L/W Ratio1.01
Star length55%
Lower girdle80%
Top View
6.93 mm7.02 mm1.27 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 6481505898
Side View
Table 63.0%Crown 34°Girdle: MediumPavilion 42°Culet: NoneDepth 61.2%

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 1
Current: £4,982 GBP|Low: £4,516 GBP|High: £7,721 GBP|Avg: £5,645 GBP|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 5£4,516 GBP
Retailer 7£4,780 GBP
Retailer 1£4,982 GBP
Retailer 6£5,057 GBP
Retailer 3£5,634 GBP
Retailer 4£6,362 GBP
Retailer 2£7,629 GBP

39 data points across 7 retailers

13 retailers£4,516 GBP to £8,854 GBP

B+
Cheapest Retailer
-
£4,516 GBP
$6,051 USD
B
Retailer 2
-
£4,799 GBP
$6,430 USD
View
B
Retailer 3
-
£4,982 GBP
View
Retailer 4
-
£5,057 GBP
A$10,424 AUD
View
Price last confirmed 32 days ago
Retailer 5
-
£5,178 GBP
$6,938 USD
View
Price last confirmed 31 days ago
Retailer 6
-
£5,258 GBP
$7,045 USD
View
Price last confirmed 33 days ago
B
Retailer 7
-
£5,298 GBP
$7,099 USD
View
B
Retailer 8
-
£5,634 GBP
€7,189 EUR
View
Retailer 9
-
£5,975 GBP
$8,006 USD
View
Price last confirmed 33 days ago
B
Retailer 10
-
£6,362 GBP
ZAR 137,717 ZAR
View
B
Retailer 11
-
£7,629 GBP
View
Retailer 12
-
£8,660 GBP
$11,604 USD
View
Price last confirmed 35 days ago
Most Expensive
B
Diamond Quarter
1.27SI1F64986CCBN · Nov 2
£8,854 GBP
View
12 more retailers have this diamond
Prices start from £4,516 GBPSave up to £4,338 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+
1.27ct Round
£4,516 GBP