Round|Natural|GIA

1.20ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 2557556499

Certificate GIA 2557556499

Diamond specifications and retailer prices

From £1,213 GBP
As of November 5, 2026
Save £288 GBP (19%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,015 GBP at Wholesale Diamonds Direct · As of October 26, 2026
View at Wholesale Diamonds Direct

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557556499. Listed at 12 retailers as of November 5, 2026, with a relatively tight 24% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

1.20
Carat
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2557556499
Dimensions6.77 × 6.81 × 4.19 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.77 mm6.81 mm1.20 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557556499
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41°Culet: NDepth 61.7%

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 5
Current: £1,213 GBP|Low: £1,207 GBP|High: £2,115 GBP|Avg: £1,519 GBP|-3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Wholesale Diamonds Direct
November 5, 2026
Retailer 1£1,213 GBP
Retailer 7£1,233 GBP
Retailer 9£1,233 GBP
Retailer 3£1,321 GBP
Retailer 2£1,343 GBP
Retailer 5£1,363 GBP
Retailer 10£1,480 GBP
Retailer 4£1,545 GBP
Retailer 8£1,594 GBP
Retailer 11£1,619 GBP
Retailer 6£1,729 GBP
Wholesale Diamonds Direct£2,015 GBP

34 data points across 12 retailers

12 retailers£1,213 GBP to £1,502 GBP

A
Cheapest Retailer
-
£1,213 GBP
Retailer 2
-
£1,233 GBP
View
Price last confirmed 9 days ago
Retailer 3
-
£1,233 GBP
View
Price last confirmed 9 days ago
Retailer 4
-
£1,321 GBP
View
Price last confirmed 9 days ago
Retailer 5
-
£1,343 GBP
View
Price last confirmed 9 days ago
Retailer 6
-
£1,363 GBP
View
Price last confirmed 9 days ago
Retailer 7
-
£1,480 GBP
View
Price last confirmed 10 days ago
B+
Retailer 8
-
£1,502 GBP
View
Retailer 9
-
£1,545 GBP
View
Price last confirmed 9 days ago
Retailer 10
-
£1,594 GBP
View
Price last confirmed 9 days ago
Retailer 11
-
£1,729 GBP
View
Price last confirmed 9 days ago
Most Expensive
Wholesale Diamonds Direct
611240265 · Oct 26
£2,015 GBP
$2,712 USD
View
Price last confirmed 10 days ago
11 more retailers have this diamond
Prices start from £1,213 GBPSave up to £288 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
1.20ct Round
£1,213 GBP