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Round|Natural|GIA

5.03ct I SI1 Round Natural Diamond

ID • I/SI1 • GIA 98

Certificate GIA 98

Diamond specifications and retailer prices

From €70,168 EUR
$78,392 USD
As of October 31, 2026
Save €10,821 EUR (13%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €80,989 EUR at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 5.03ct natural round diamond

This 5.03ct natural round sits in the over five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 3 retailers as of October 31, 2026, with prices from €70,168 to €80,989, a €10,821 spread on the same certified stone. Blue Nile lists it at €80,989. 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

5.03
Carat
I
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 98
Dimensions11.04 × 11.08 × 6.77 mm
L/W Ratio1.00
Top View
11.04 mm11.08 mm5.03 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 98
Side View
Table 56.0%CrownGirdle: THN-MEDPavilionCulet: 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: Oct 31
Current: €80,989 EUR|Low: €69,471 EUR|High: €80,989 EUR|Avg: €74,581 EUR
Blue Nile
Retailer 2
Retailer 3
September 23, 2026
Retailer 2€70,168 EUR
Retailer 3€73,484 EUR
Blue Nile€80,989 EUR

3 data points across 3 retailers

3 retailers€70,168 EUR to €80,989 EUR

B+
Cheapest Retailer
-
€70,168 EUR
$78,392 USD
B+
Retailer 2
-
€73,484 EUR
$82,097 USD
View
Most Expensive
B
Blue Nile
5626686 · Oct 31
€80,989 EUR
$90,481 USD
View
2 more retailers have this diamond
Prices start from €70,168 EURSave up to €10,821 EUR

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+
5.03ct Round
€70,168 EUR