Round|Natural|GIA

1.00ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6552615902

Certificate GIA 6552615902

Diamond specifications and retailer prices

From £1,414 GBP
HK$14,800 HKD
As of October 29, 2026
Save £878 GBP (38%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £3,993 GBP at NZ Jewellers · As of October 6, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552615902. Listed at 24 retailers as of October 29, 2026, with a 62% 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
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle33°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6552615902
Dimensions6.34 × 6.40 × 3.91 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.34 mm6.40 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552615902
Side View
Table 60.0%Crown 33°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.4%

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 29
Current: £1,627 GBP|Low: £1,375 GBP|High: £3,387 GBP|Avg: £2,005 GBP|-8.9%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 30, 2026
Retailer 14£1,414 GBP
Retailer 7£1,424 GBP
Retailer 2£1,534 GBP
Retailer 16£1,568 GBP
Retailer 1£1,627 GBP
Retailer 18£1,724 GBP
Retailer 4£1,787 GBP
Retailer 15£1,814 GBP
Retailer 8£1,940 GBP
Retailer 17£1,955 GBP
Retailer 19£1,955 GBP
Retailer 3£2,023 GBP
Retailer 12£2,066 GBP
Retailer 11£2,140 GBP
Retailer 5£2,189 GBP
Retailer 6£2,203 GBP
Retailer 13£2,292 GBP
Retailer 10£2,319 GBP
Retailer 9£3,320 GBP

25 data points across 19 retailers

24 retailers£1,414 GBP to £2,292 GBP

A
Cheapest Retailer
-
£1,414 GBP
HK$14,800 HKD
Retailer 2
-
£1,424 GBP
₹181,736 INR
View
Price last confirmed 17 days ago
A
Retailer 3
-
£1,504 GBP
$2,015 USD
View
A
Retailer 4
-
£1,534 GBP
$2,056 USD
View
A
Retailer 5
-
£1,568 GBP
$2,101 USD
View
Final sale: no returns
A
Retailer 6
-
£1,627 GBP
$2,180 USD
View
A
Retailer 7
-
£1,724 GBP
$2,310 USD
View
B+
Retailer 8
-
£1,787 GBP
$2,395 USD
View
B+
Retailer 9
-
£1,814 GBP
View
B+
Retailer 10
-
£1,865 GBP
$2,499 USD
View
Retailer 11
-
£1,875 GBP
$2,512 USD
View
Price last confirmed 16 days ago
Retailer 12
-
£1,940 GBP
SGD 3,513 SGD
View
Price last confirmed 16 days ago
Retailer 13
-
£1,945 GBP
$2,606 USD
View
Price last confirmed 38 days ago
B+
Retailer 14
-
£1,955 GBP
$2,620 USD
View
B+
Retailer 15
-
£1,955 GBP
$2,620 USD
View
B+
Retailer 16
-
£2,023 GBP
$2,710 USD
View
B+
Retailer 17
-
£2,066 GBP
View
Retailer 18
-
£2,140 GBP
A$4,411 AUD
View
Price last confirmed 24 days ago
Retailer 19
-
£2,204 GBP
$2,953 USD
View
Price last confirmed 33 days ago
B+
Retailer 20
-
£2,292 GBP
$3,071 USD
View
Retailer 21
-
£2,319 GBP
ZAR 50,202 ZAR
View
Price last confirmed 20 days ago
Retailer 22
-
£3,320 GBP
View
Price last confirmed 17 days ago
Retailer 23
-
£3,993 GBP
$5,350 USD
View
Price last confirmed 34 days ago
Most Expensive
NZ Jewellers
31f90981-d8e1-4b67-a371-643a28bf8e65 · Oct 6
£3,993 GBP
$5,350 USD
View
Price last confirmed 26 days ago
23 more retailers have this diamond
Prices start from £1,414 GBPSave up to £878 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 Round
£1,414 GBP