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Round|Natural|GIA

5.17ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 6555671558

Certificate GIA 6555671558

Diamond specifications and retailer prices

From €106,540 EUR
HK$929,900 HKD
As of October 29, 2026
Save €95,904 EUR (47%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €202,444 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 5.17ct natural round diamond

This 5.17ct natural round sits in the over five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6555671558. Listed at 19 retailers as of October 29, 2026, with prices from €106,540 to €202,444, a €95,904 spread on the same certified stone. MOH London lists it at €202,444. 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

5.17
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6555671558
Dimensions10.96 × 11.03 × 6.87 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Cloud, Feather, Needle, Indented Natural
Top View
10.96 mm11.03 mm5.17 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555671558
Side View
Table 57.0%Crown 36.5°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 62.5%

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: €202,444 EUR|Low: €106,540 EUR|High: €207,632 EUR|Avg: €140,901 EUR|-1.5%
MOH London
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
November 1, 2026
Retailer 13€106,540 EUR
Retailer 12€118,607 EUR
Retailer 7€121,091 EUR
Retailer 15€128,757 EUR
Retailer 5€131,364 EUR
Retailer 8€133,939 EUR
Retailer 3€136,500 EUR
Retailer 10€138,446 EUR
Retailer 4€138,936 EUR
Retailer 14€138,936 EUR
Retailer 11€140,535 EUR
Retailer 9€143,563 EUR
Retailer 2€155,749 EUR
Retailer 6€157,215 EUR
MOH London€202,444 EUR

26 data points across 15 retailers

19 retailers€106,540 EUR to €202,444 EUR

A
Cheapest Retailer
-
€106,540 EUR
HK$929,900 HKD
B+
Retailer 2
-
€118,607 EUR
$132,508 USD
View
B+
Retailer 3
-
€128,757 EUR
$143,848 USD
View
B+
Retailer 4
-
€133,939 EUR
$149,637 USD
View
B+
Retailer 5
-
€136,500 EUR
$152,498 USD
View
Retailer 6
-
€136,838 EUR
$152,876 USD
View
Price last confirmed 32 days ago
Retailer 7
-
€136,838 EUR
$152,876 USD
View
Price last confirmed 40 days ago
Retailer 8
-
€136,838 EUR
$152,876 USD
View
Price last confirmed 34 days ago
B+
Retailer 9
-
€138,446 EUR
$154,672 USD
View
B
Retailer 10
-
€138,936 EUR
$155,220 USD
View
B
Retailer 11
-
€138,936 EUR
$155,220 USD
View
Retailer 12
-
€140,535 EUR
$157,006 USD
View
Price last confirmed 9 days ago
Retailer 13
-
€142,311 EUR
$158,991 USD
View
Price last confirmed 39 days ago
Retailer 14
-
€142,311 EUR
$158,991 USD
View
Price last confirmed 24 days ago
B+
Retailer 15
-
€143,563 EUR
$160,390 USD
View
Retailer 16
-
€147,785 EUR
$165,106 USD
View
Price last confirmed 40 days ago
Retailer 17
-
€147,785 EUR
$165,106 USD
View
Price last confirmed 32 days ago
B+
Retailer 18
-
€155,749 EUR
View
Most Expensive
B
MOH London
310664777 · Oct 29
€202,444 EUR
£178,088 GBP
View
18 more retailers have this diamond
Prices start from €106,540 EURSave up to €95,904 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.

A
5.17ct Round
€106,540 EUR