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Round|Natural|GIA

0.55ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6552529942

Certificate GIA 6552529942

Diamond specifications and retailer prices

From £408 GBP
As of October 31, 2026
Save £199 GBP (33%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,290 GBP at NZ Jewellers · As of October 27, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552529942. Listed at 16 retailers as of October 31, 2026, with a 49% 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

0.55
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6552529942
Dimensions5.23 × 5.27 × 3.30 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
5.23 mm5.27 mm0.55 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552529942
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.8%

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 31
Current: £1,290 GBP|Low: £306 GBP|High: £1,327 GBP|Avg: £532 GBP|-2.8%
NZ Jewellers
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
October 31, 2026
Retailer 12£308 GBP
Retailer 16£351 GBP
Retailer 8£352 GBP
Retailer 9£379 GBP
Retailer 17£407 GBP
Retailer 3£408 GBP
Retailer 13£409 GBP
Retailer 6£432 GBP
Retailer 5£443 GBP
Retailer 14£475 GBP
Retailer 4£500 GBP
Retailer 10£505 GBP
Retailer 11£559 GBP
Retailer 15£572 GBP
Retailer 2£607 GBP
Retailer 7£951 GBP
NZ Jewellers£1,290 GBP

19 data points across 17 retailers

16 retailers£408 GBP to £607 GBP

Retailer 1
-
£308 GBP
Price last confirmed 7 days ago
Retailer 2
-
£351 GBP
View
Price last confirmed 7 days ago
Retailer 3
-
£352 GBP
View
Price last confirmed 8 days ago
Retailer 4
-
£407 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£408 GBP
View
A
Retailer 6
-
£409 GBP
View
Retailer 7
-
£432 GBP
View
Price last confirmed 10 days ago
Retailer 8
-
£443 GBP
View
Price last confirmed 12 days ago
Retailer 9
-
£475 GBP
View
Price last confirmed 10 days ago
A
Retailer 10
-
£500 GBP
View
A
Retailer 11
-
£505 GBP
View
B+
Retailer 12
-
£559 GBP
View
Retailer 13
-
£572 GBP
View
Price last confirmed 11 days ago
B+
Retailer 14
-
£607 GBP
View
Retailer 15
-
£951 GBP
View
Price last confirmed 11 days ago
Most Expensive
NZ Jewellers
75eb94d4-cae0-4ed7-96d5-e62f1b3717b8 · Oct 27
£1,290 GBP
$1,736 USD
View
Price last confirmed 10 days ago
15 more retailers have this diamond
Prices start from £408 GBPSave up to £199 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
£408 GBP