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Round|Natural|GIA

0.55ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 7551634492

Certificate GIA 7551634492

Diamond specifications and retailer prices

From £420 GBP
HK$4,400 HKD
As of November 1, 2026
Save £1,363 GBP (76%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £1,784 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 0.55ct natural round diamond

This 0.55ct natural round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7551634492. Listed at 20 retailers as of October 30, 2026, with prices from £420 to £1,784, a £1,363 spread on the same certified stone. NZ Jewellers lists it at £1,784. 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

0.55
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 7551634492
Dimensions5.23 × 5.25 × 3.25 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Feather
Top View
5.23 mm5.25 mm0.55 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7551634492
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.1%

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 1
Current: £680 GBP|Low: £420 GBP|High: £1,540 GBP|Avg: £732 GBP|+0.2%
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
November 2, 2026
Retailer 14£420 GBP
Retailer 10£423 GBP
Retailer 6£508 GBP
Retailer 16£525 GBP
Retailer 4£578 GBP
Retailer 7£634 GBP
Retailer 2£668 GBP
Retailer 15£673 GBP
Retailer 1£680 GBP
Retailer 3£698 GBP
Retailer 9£736 GBP
Retailer 5£773 GBP
Retailer 12£878 GBP
Retailer 8£882 GBP
Retailer 11£1,042 GBP
Retailer 13£1,540 GBP

32 data points across 16 retailers

20 retailers£420 GBP to £1,784 GBP

A
Cheapest Retailer
-
£420 GBP
HK$4,400 HKD
A
Retailer 2
-
£423 GBP
₹54,033 INR
View
Retailer 3
-
£508 GBP
$680 USD
View
Price last confirmed 21 days ago
B+
Retailer 4
-
£525 GBP
$703 USD
View
Final sale: no returns
B+
Retailer 5
-
£569 GBP
$762 USD
View
B+
Retailer 6
-
£578 GBP
$774 USD
View
B+
Retailer 7
-
£591 GBP
$792 USD
View
Retailer 8
-
£609 GBP
$816 USD
View
Price last confirmed 33 days ago
B+
Retailer 9
-
£634 GBP
$850 USD
View
B+
Retailer 10
-
£668 GBP
$895 USD
View
B+
Retailer 11
-
£673 GBP
View
B+
Retailer 12
-
£680 GBP
View
B+
Retailer 13
-
£698 GBP
$935 USD
View
B+
Retailer 14
-
£736 GBP
€939 EUR
View
B+
Retailer 15
-
£773 GBP
$1,036 USD
View
B
Retailer 16
-
£878 GBP
ZAR 19,009 ZAR
View
Retailer 17
-
£882 GBP
A$1,817 AUD
View
Price last confirmed 29 days ago
B
Retailer 18
-
£1,042 GBP
View
B
Retailer 19
-
£1,540 GBP
View
Most Expensive
B
NZ Jewellers
19ae4306-72f5-4bb6-b5c3-8f6f5f008c46 · Oct 30
£1,784 GBP
$2,390 USD
View
19 more retailers have this diamond
Prices start from £420 GBPSave up to £1,363 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
0.55ct Round
£420 GBP