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Round|Lab Grown|IGI

1.55ct D SI1 Round Lab Grown Diamond

VG • D/SI1 • IGI LG784643985

Shape and cutting style on the report: Round brilliant

Certificate IGI LG784643985

Diamond specifications and retailer prices

From €182 EUR
As of November 1, 2026
Save €994 EUR (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €1,176 EUR at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.55ct lab-grown round diamond

This 1.55ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG784643985 or 784643985. Listed at 14 retailers as of November 1, 2026, with prices from €182 to €1,176, a €994 spread on the same certified stone. Brilliant Earth lists it at €1,176. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.55
Carat
D
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle37°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784643985
Dimensions7.41 × 7.32 × 4.55 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.41 mm7.32 mm1.55 ctD / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG784643985
Side View
Table 59.0%Crown 37°Girdle: MED-THKPavilion 40.4°Culet: NoneDepth 61.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €1,176 EUR|Low: €114 EUR|High: €1,497 EUR|Avg: €556 EUR|-21.4%
Brilliant Earth
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 6, 2026
Retailer 7€114 EUR
Retailer 12€182 EUR
Retailer 13€203 EUR
Retailer 3€225 EUR
Retailer 2€380 EUR
Retailer 15€389 EUR
Retailer 11€408 EUR
Retailer 4€410 EUR
Retailer 14€454 EUR
Retailer 10€603 EUR
Retailer 8€659 EUR
Retailer 6€770 EUR
Retailer 9€1,050 EUR
Retailer 5€1,073 EUR
Brilliant Earth€1,176 EUR

36 data points across 15 retailers

14 retailers€182 EUR to €1,176 EUR

A
Cheapest Retailer
-
€182 EUR
A
Retailer 2
-
€203 EUR
View
Final sale: no returns
Retailer 3
-
€222 EUR
View
Price last confirmed 52 days ago
Retailer 4
-
€225 EUR
View
Price last confirmed 12 days ago
A
Retailer 5
-
€380 EUR
View
B+
Retailer 6
-
€389 EUR
View
B+
Retailer 7
-
€408 EUR
View
B+
Retailer 8
-
€410 EUR
View
B+
Retailer 9
-
€454 EUR
View
B+
Retailer 10
-
€603 EUR
View
B
Retailer 11
-
€659 EUR
View
B
Retailer 12
-
€770 EUR
View
B
Retailer 13
-
€1,050 EUR
View
Most Expensive
B
Brilliant Earth
20185628A · Nov 3
€1,176 EUR
$1,320 USD
View
13 more retailers have this diamond
Prices start from €182 EURSave up to €994 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
1.55ct Round
€182 EUR