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Round|Lab Grown|IGI

1.89ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG758560174

Shape and cutting style on the report: Round brilliant

Certificate IGI LG758560174

Diamond specifications and retailer prices

From $353 AUD
$248 USD
As of October 26, 2026
Save $1,455 AUD (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,808 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.89ct lab-grown round diamond

This 1.89ct 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 top-tier cut grade and certified by IGI LG758560174 or 758560174. Listed at 19 retailers as of October 26, 2026, with prices from $353 to $1,808, a $1,455 spread on the same certified stone. Brilliant Earth lists it at $1,808. 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

1.89
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG758560174
Dimensions7.92 × 7.88 × 4.91 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.92 mm7.88 mm1.89 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG758560174
Side View
Table 57.0%Crown 34.9°Girdle: MED-STKPavilion 41°Culet: NoneDepth 62.1%

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: Oct 26
Current: $1,808 AUD|Low: $350 AUD|High: $1,855 AUD|Avg: $931 AUD
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
October 29, 2026
Retailer 6$353 AUD
Retailer 19$394 AUD
Retailer 18$409 AUD
Retailer 3$437 AUD
Retailer 16$492 AUD
Retailer 11$683 AUD
Retailer 13$683 AUD
Retailer 2$692 AUD
Retailer 7$733 AUD
Retailer 10$814 AUD
Retailer 14$824 AUD
Retailer 5$886 AUD
Retailer 17$955 AUD
Retailer 4$1,103 AUD
Retailer 8$1,374 AUD
Retailer 12$1,399 AUD
Retailer 9$1,405 AUD
Retailer 15$1,755 AUD
Brilliant Earth$1,808 AUD

35 data points across 19 retailers

19 retailers$353 AUD to $1,808 AUD

A
Cheapest Retailer
-
$353 AUD
$248 USD
A
Retailer 2
-
$394 AUD
$277 USD
View
Final sale: no returns
A
Retailer 3
-
$409 AUD
$287 USD
View
A
Retailer 4
-
$437 AUD
$307 USD
View
A
Retailer 5
-
$492 AUD
HK$2,700 HKD
View
A
Retailer 6
-
$683 AUD
$480 USD
View
Price last confirmed 10 days ago
A
Retailer 7
-
$683 AUD
£378 GBP
View
A
Retailer 8
-
$692 AUD
€463 EUR
View
B+
Retailer 9
-
$733 AUD
$515 USD
View
A
Retailer 10
-
$814 AUD
$572 USD
View
A
Retailer 11
-
$824 AUD
£456 GBP
View
B+
Retailer 12
-
$886 AUD
View
B+
Retailer 13
-
$955 AUD
$671 USD
View
B+
Retailer 14
-
$1,103 AUD
$775 USD
View
B+
Retailer 15
-
$1,374 AUD
$965 USD
View
B+
Retailer 16
-
$1,399 AUD
SGD 1,328 SGD
View
B+
Retailer 17
-
$1,405 AUD
$987 USD
View
B
Retailer 18
-
$1,755 AUD
£971 GBP
View
Most Expensive
B
Brilliant Earth
21805874A · Oct 29
$1,808 AUD
$1,270 USD
View
18 more retailers have this diamond
Prices start from $353 AUDSave up to $1,455 AUD

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
1.89ct Round
$353 AUD