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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 $442 NZD
$248 USD
As of October 26, 2026
Save $1,821 NZD (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,263 NZD at Brilliant Earth · As of October 28, 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 $442 to $2,263, a $1,821 spread on the same certified stone. Brilliant Earth lists it at $2,263. 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: $2,263 NZD|Low: $438 NZD|High: $2,321 NZD|Avg: $1,165 NZD
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$442 NZD
Retailer 19$493 NZD
Retailer 18$511 NZD
Retailer 3$547 NZD
Retailer 16$616 NZD
Retailer 11$855 NZD
Retailer 13$855 NZD
Retailer 2$866 NZD
Retailer 7$917 NZD
Retailer 10$1,019 NZD
Retailer 14$1,031 NZD
Retailer 5$1,109 NZD
Retailer 17$1,195 NZD
Retailer 4$1,381 NZD
Retailer 8$1,719 NZD
Retailer 12$1,751 NZD
Retailer 9$1,758 NZD
Retailer 15$2,197 NZD
Brilliant Earth$2,263 NZD

35 data points across 19 retailers

19 retailers$442 NZD to $2,263 NZD

A
Cheapest Retailer
-
$442 NZD
$248 USD
A
Retailer 2
-
$493 NZD
$277 USD
View
Final sale: no returns
A
Retailer 3
-
$511 NZD
$287 USD
View
A
Retailer 4
-
$547 NZD
$307 USD
View
A
Retailer 5
-
$616 NZD
HK$2,700 HKD
View
A
Retailer 6
-
$855 NZD
$480 USD
View
Price last confirmed 10 days ago
A
Retailer 7
-
$855 NZD
£378 GBP
View
A
Retailer 8
-
$866 NZD
€463 EUR
View
B+
Retailer 9
-
$917 NZD
$515 USD
View
A
Retailer 10
-
$1,019 NZD
$572 USD
View
A
Retailer 11
-
$1,031 NZD
£456 GBP
View
B+
Retailer 12
-
$1,109 NZD
A$958 AUD
View
B+
Retailer 13
-
$1,195 NZD
$671 USD
View
B+
Retailer 14
-
$1,381 NZD
$775 USD
View
B+
Retailer 15
-
$1,719 NZD
$965 USD
View
B+
Retailer 16
-
$1,751 NZD
SGD 1,328 SGD
View
B+
Retailer 17
-
$1,758 NZD
$987 USD
View
B
Retailer 18
-
$2,197 NZD
£971 GBP
View
Most Expensive
B
Brilliant Earth
21805874A · Oct 28
$2,263 NZD
$1,270 USD
View
18 more retailers have this diamond
Prices start from $442 NZDSave up to $1,821 NZD

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
$442 NZD